Gröbner Hals

Overview

Gröbner Hals is a Category 1 climb in Austria, covering 10.8 km from a start elevation of 889 m to a summit at 1631 m. Over that distance it delivers a net elevation gain of 742 m at an average gradient of 6.9%. On paper that reads like a steady, honest alpine ascent, but the average tells only part of the story.

The total ascent on Gröbner Hals is 926 m, well above the 742 m of net gain. That 184 m difference is undulation — sections where the road dips and then climbs again, forcing you to re-earn elevation you had already gained. For your legs, the climb is effectively longer than the net figure suggests, and the descents rarely come as free recovery because you pay for them on the next ramp.

How the Gradient Unfolds

The 6.9% average hides real variation. Undulation means you will meet flatter and downhill stretches that pull the average down, which in turn means the climbing sections sit noticeably steeper than 6.9% to compensate.

• Flatter or recovery sections where the road eases and briefly dips
• Repeated short climbs that re-gain lost elevation after each dip
• A punishingly steep ramp where the gradient spikes far above the average

Do not treat the average as a promise. Read the road ahead and expect the steep pitches to arrive without warning.

Pacing Notes

On a smooth, consistent climb you can hold an even effort. Gröbner Hals is not that climb. Its undulation means even-effort and even-speed pacing diverge sharply: chasing a constant speed over the dips wastes energy you will need for the ramps.

Anchor your effort to your sustainable power output rather than your speedometer. Let your speed rise on the shallow and downhill sections and hold power steady, then accept a slower speed on the steep pitches without spiking above threshold. If you do not know your numbers, run the FTP estimator before you ride and pace to that ceiling.

Gearing

The steepest ramp governs your gearing choice here. With a maximum gradient this severe, a standard setup will leave you grinding or walking. Fit a compact or sub-compact chainset paired with a wide-range cassette — think 34×32 or 34×34 — so you keep a spinnable cadence on the steepest section rather than muscling a big gear at low RPM. Check your chainset and cassette combination before the ride; discovering you are over-geared halfway up a 10.8 km climb is not a mistake you can fix on the road.

Summary

• Length: 10.8 km
• Average gradient: 6.9%
• Maximum gradient: 32.73%
• Net elevation gain: 742 m
• Total ascent: 926 m
• Category: 1

Gröbner Hals rewards riders who respect its undulation. Pace to power, gear low, and treat the 926 m of total ascent — not the 742 m net — as the true measure of the day.